{"id":4174,"date":"2020-10-30T19:54:59","date_gmt":"2020-10-30T18:54:59","guid":{"rendered":"https:\/\/webhosting.de\/ramdisk-zur-beschleunigung-erstellen\/"},"modified":"2021-07-15T13:06:06","modified_gmt":"2021-07-15T12:06:06","slug":"ramdisk-to-acceleration-creates","status":"publish","type":"post","link":"https:\/\/webhosting.de\/fr\/ramdisk-zur-beschleunigung-erstellen\/","title":{"rendered":"Cr\u00e9ation de Ramdisk pour acc\u00e9l\u00e9rer Amavis sous Linux"},"content":{"rendered":"

Lors de l'utilisation quotidienne d'un serveur web, certains services sont de plus en plus sollicit\u00e9s pour traiter une demande et donc pour charger le serveur.
\nUn exemple typique est l'interface entre le serveur de messagerie et le scanner de virus : Amavis, qui enregistre temporairement les courriers \u00e9lectroniques et les relit. Cela cr\u00e9e naturellement une forte demande d'acc\u00e8s aux disques durs ou aux SSD dans les grands syst\u00e8mes.
\nIl est ici possible de stocker ces op\u00e9rations de fichiers dans la m\u00e9moire de travail afin de garantir un traitement consid\u00e9rablement plus rapide.<\/p>\n

D'autres exemples seraient le r\u00e9pertoire \/tmp lui-m\u00eame dans le php<\/a> des fichiers de session, ou m\u00eame des fichiers journaux.<\/p>\n

Lors d'une sauvegarde en m\u00e9moire vive, il y a toujours un risque de perte due \u00e0 un d\u00e9faut du syst\u00e8me ou \u00e0 un red\u00e9marrage du serveur. Vous ne devez donc toujours \u00e9conomiser que les d\u00e9penses non importantes Donn\u00e9es<\/a> y stocker, ou pr\u00e9voir une sauvegarde r\u00e9guli\u00e8re.<\/p>\n

Un RAMDISK pour Amavis peut \u00eatre facilement cr\u00e9\u00e9 avec quelques commandes.<\/p>\n

Pour mettre en place un disque dur, nous avons besoin du r\u00e9pertoire o\u00f9 Amavis stocke les fichiers et de l'ID de l'utilisateur et du groupe.<\/p>\n

Les deux peuvent \u00eatre r\u00e9alis\u00e9s plus facilement avec<\/p>\n

grep 'amavis' \/etc\/passwd<\/span> <\/p>\n

lire \u00e0 haute voix.<\/p>\n

amavis:x:497:497:Amavis email scan user:\/var\/amavis:\/bin\/sh<\/p>\n

Dans cet exemple, le chemin est \/var\/amavis. Les fichiers temporaires sont ensuite stock\u00e9s dans le r\u00e9pertoire \/var\/amavis\/tmp. Pour ce r\u00e9pertoire, nous voulons cr\u00e9er un disque dur.<\/p>\n

L'ID de l'utilisateur est le premier num\u00e9ro 497 suivi de l'ID du groupe qui, dans ce cas, est \u00e9galement 497.<\/p>\n

Dans \/etc\/fstab, nous entrons maintenant la ligne suivante pour nous assurer que le disque dur est cr\u00e9\u00e9 m\u00eame apr\u00e8s un red\u00e9marrage<\/p>\n

tmpfs \/var\/amavis\/tmp tmpfs defaults,size=256m,mode=750,uid=497,gid=497 0 0<\/p>\n

La taille du disque dur ne doit pas \u00eatre trop petite, car amavis rejettera les e-mails si la limite est d\u00e9pass\u00e9e. 256 Mo suffisent dans la plupart des cas.<\/p>\n

Vous pouvez d\u00e9terminer la demande actuelle avec<\/p>\n

you -hs \/var\/amavis\/tmp<\/span><\/p>\n

d'enqu\u00eater. Le r\u00e9sultat, par exemple 11M \/var\/amavis\/tmp, indique alors combien de m\u00e9gaoctets sont d\u00e9j\u00e0 dans le r\u00e9pertoire. Il convient toutefois de noter que les jours o\u00f9 le volume du courrier est \u00e9lev\u00e9 en raison Spam<\/a> ou des pi\u00e8ces jointes volumineuses, il faut bien s\u00fbr plus d'espace.<\/p>\n

Toutefois, en cas d'urgence, le disque dur peut toujours \u00eatre retir\u00e9 ou agrandi.<\/p>\n

Nous pouvons maintenant simplement monter le disque dur avec<\/p>\n

mount \/var\/amavis\/tmp<\/span><\/p>\n

Via<\/p>\n

df -h<\/span><\/p>\n

tmpfs 512M 0 512M 0% \/var\/amavis\/tmp<\/p>\n

nous pouvons alors d\u00e9tecter que notre disque dur est actif et vide.<\/p>\n

D\u00e9sormais, le traitement des donn\u00e9es par amavis est extr\u00eamement rapide.<\/p>","protected":false},"excerpt":{"rendered":"

Im t\u00e4glichen Gebrauch eines Webservers fallen einige Dienste auf die mit steigenden Anfragen immer l\u00e4nger brauchen um eine Anfrage zu bearbeiten und somit den Server belasten. Ein typisches Beispiel ist die Schnittstelle zwischen Mailserver und Virusscanner: Amavis, der die eMails tempor\u00e4r speichert und wieder liest. Dies erzeugt nat\u00fcrlich bei gr\u00f6\u00dferen Anlagen einen hohen Bedarf an […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_crdt_document":"","inline_featured_image":false,"footnotes":""},"categories":[780,700,995],"tags":[172,173,117,174],"class_list":["post-4174","post","type-post","status-publish","format-standard","hentry","category-administration-anleitungen","category-anleitungen","category-hilfe","tag-amavis","tag-beschleunigen","tag-linux","tag-ramdisk"],"acf":[],"_wp_attached_file":null,"_wp_attachment_metadata":null,"litespeed-optimize-size":null,"litespeed-optimize-set":null,"_elementor_source_image_hash":null,"_wp_attachment_image_alt":null,"stockpack_author_name":null,"stockpack_author_url":null,"stockpack_provider":null,"stockpack_image_url":null,"stockpack_license":null,"stockpack_license_url":null,"stockpack_modification":null,"color":null,"original_id":null,"original_url":null,"original_link":null,"unsplash_location":null,"unsplash_sponsor":null,"unsplash_exif":null,"unsplash_attachment_metadata":null,"_elementor_is_screenshot":null,"surfer_file_name":null,"surfer_file_original_url":null,"envato_tk_source_kit":null,"envato_tk_source_index":null,"envato_tk_manifest":null,"envato_tk_folder_name":null,"envato_tk_builder":null,"envato_elements_download_event":null,"_menu_item_type":null,"_menu_item_menu_item_parent":null,"_menu_item_object_id":null,"_menu_item_object":null,"_menu_item_target":null,"_menu_item_classes":null,"_menu_item_xfn":null,"_menu_item_url":null,"_trp_menu_languages":null,"rank_math_primary_category":null,"rank_math_title":null,"inline_featured_image":null,"_yoast_wpseo_primary_category":null,"rank_math_schema_blogposting":null,"rank_math_schema_videoobject":null,"_oembed_049c719bc4a9f89deaead66a7da9fddc":null,"_oembed_time_049c719bc4a9f89deaead66a7da9fddc":null,"_yoast_wpseo_focuskw":"ramdisk","_yoast_wpseo_linkdex":null,"_oembed_27e3473bf8bec795fbeb3a9d38489348":null,"_oembed_c3b0f6959478faf92a1f343d8f96b19e":null,"_trp_translated_slug_en_us":null,"_wp_desired_post_slug":null,"_yoast_wpseo_title":null,"tldname":null,"tldpreis":null,"tldrubrik":null,"tldpolicylink":null,"tldsize":null,"tldregistrierungsdauer":null,"tldtransfer":null,"tldwhoisprivacy":null,"tldregistrarchange":null,"tldregistrantchange":null,"tldwhoisupdate":null,"tldnameserverupdate":null,"tlddeletesofort":null,"tlddeleteexpire":null,"tldumlaute":null,"tldrestore":null,"tldsubcategory":null,"tldbildname":null,"tldbildurl":null,"tldclean":null,"tldcategory":null,"tldpolicy":null,"tldbesonderheiten":null,"tld_bedeutung":null,"_oembed_d167040d816d8f94c072940c8009f5f8":null,"_oembed_b0a0fa59ef14f8870da2c63f2027d064":null,"_oembed_4792fa4dfb2a8f09ab950a73b7f313ba":null,"_oembed_33ceb1fe54a8ab775d9410abf699878d":null,"_oembed_fd7014d14d919b45ec004937c0db9335":null,"_oembed_21a029d076783ec3e8042698c351bd7e":null,"_oembed_be5ea8a0c7b18e658f08cc571a909452":null,"_oembed_a9ca7a298b19f9b48ec5914e010294d2":null,"_oembed_f8db6b27d08a2bb1f920e7647808899a":null,"_oembed_168ebde5096e77d8a89326519af9e022":null,"_oembed_cdb76f1b345b42743edfe25481b6f98f":null,"_oembed_87b0613611ae54e86e8864265404b0a1":null,"_oembed_27aa0e5cf3f1bb4bc416a4641a5ac273":null,"_oembed_time_27aa0e5cf3f1bb4bc416a4641a5ac273":null,"_tldname":null,"_tldclean":null,"_tldpreis":null,"_tldcategory":null,"_tldsubcategory":null,"_tldpolicy":null,"_tldpolicylink":null,"_tldsize":null,"_tldregistrierungsdauer":null,"_tldtransfer":null,"_tldwhoisprivacy":null,"_tldregistrarchange":null,"_tldregistrantchange":null,"_tldwhoisupdate":null,"_tldnameserverupdate":null,"_tlddeletesofort":null,"_tlddeleteexpire":null,"_tldumlaute":null,"_tldrestore":null,"_tldbildname":null,"_tldbildurl":null,"_tld_bedeutung":null,"_tldbesonderheiten":null,"_oembed_ad96e4112edb9f8ffa35731d4098bc6b":null,"_oembed_8357e2b8a2575c74ed5978f262a10126":null,"_oembed_3d5fea5103dd0d22ec5d6a33eff7f863":null,"_eael_widget_elements":null,"_oembed_0d8a206f09633e3d62b95a15a4dd0487":null,"_oembed_time_0d8a206f09633e3d62b95a15a4dd0487":null,"_aioseo_description":null,"_eb_attr":null,"_eb_data_table":null,"_oembed_819a879e7da16dd629cfd15a97334c8a":null,"_oembed_time_819a879e7da16dd629cfd15a97334c8a":null,"_acf_changed":null,"_wpcode_auto_insert":null,"_edit_last":null,"_edit_lock":null,"_oembed_e7b913c6c84084ed9702cb4feb012ddd":null,"_oembed_bfde9e10f59a17b85fc8917fa7edf782":null,"_oembed_time_bfde9e10f59a17b85fc8917fa7edf782":null,"_oembed_03514b67990db061d7c4672de26dc514":null,"_oembed_time_03514b67990db061d7c4672de26dc514":null,"rank_math_news_sitemap_robots":"index","rank_math_robots":["index"],"_eael_post_view_count":"4972","_trp_automatically_translated_slug_ru_ru":null,"_trp_automatically_translated_slug_et":"ramdisk-to-accelerate-create","_trp_automatically_translated_slug_lv":"ramdisk-to-accelerate-create","_trp_automatically_translated_slug_fr_fr":null,"_trp_automatically_translated_slug_en_us":null,"_wp_old_slug":null,"_trp_aut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